watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [syz-executor.0:20857] Modules linked in: irq event stamp: 2773359 hardirqs last enabled at (2773358): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (2773359): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (2738336): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (2738341): [] __irq_exit_rcu+0xc4/0x100 CPU: 1 UID: 0 PID: 20857 Comm: syz-executor.0 Not tainted 6.13.0-rc1-next-20241203 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:unwind_get_return_address+0x5b/0xa0 Code: 1b 58 72 03 48 b8 00 00 00 00 00 fc ff df 48 8d 6b 58 48 89 ea 48 c1 ea 03 80 3c 02 00 75 36 48 8b 7b 58 e8 e7 86 0d 00 85 c0 <74> cf 48 b8 00 00 00 00 00 fc ff df 48 89 ea 48 c1 ea 03 80 3c 02 RSP: 0018:ffff88806cf095d0 EFLAGS: 00000202 RAX: 0000000000000001 RBX: ffff88806cf095e8 RCX: 0000000000000001 RDX: 1ffff1100d9e12c8 RSI: ffff88806cf09c08 RDI: ffffffff845c8636 RBP: ffff88806cf09640 R08: 0000000000000001 R09: ffff88806cf09628 R10: 000000000003c001 R11: 00000000000b9a19 R12: ffff88806cf096b0 R13: 0000000000000000 R14: ffff888044770000 R15: 0000000000092820 FS: 00007f5016e05700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 0000000036194000 CR4: 0000000000350ef0 Call Trace: arch_stack_walk+0x9d/0xf0 stack_trace_save+0x8f/0xc0 kasan_save_stack+0x24/0x50 kasan_save_track+0x14/0x30 __kasan_slab_alloc+0x59/0x70 kmem_cache_alloc_noprof+0x13d/0x3d0 __alloc_object+0x2f/0x270 __create_object+0x1d/0x80 kmem_cache_alloc_node_noprof+0x311/0x3e0 __alloc_skb+0x2ad/0x370 __netdev_alloc_skb+0x7a/0x7c0 __ieee80211_beacon_get+0x3f4/0xfc0 ieee80211_beacon_get_tim+0xa6/0x280 mac80211_hwsim_beacon_tx+0x49b/0x950 __iterate_interfaces+0x2e0/0x650 ieee80211_iterate_active_interfaces_atomic+0x71/0x1b0 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x1ab/0xa80 hrtimer_run_softirq+0x14c/0x310 handle_softirqs+0x1b1/0x770 __irq_exit_rcu+0xc4/0x100 irq_exit_rcu+0x9/0x20 sysvec_apic_timer_interrupt+0x70/0x80 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:_raw_spin_unlock_irqrestore+0x34/0x50 Code: c7 18 53 48 89 f3 48 8b 74 24 10 e8 f6 4b a9 fc 48 89 ef e8 5e ba a9 fc 80 e7 02 74 06 e8 54 0c d3 fc fb 65 ff 0d 54 cf 7c 7b <74> 07 5b 5d e9 a3 1e 00 00 0f 1f 44 00 00 5b 5d e9 97 1e 00 00 0f RSP: 0018:ffff88803f717550 EFLAGS: 00000246 RAX: 000000000029c8a3 RBX: 0000000000000246 RCX: 1ffffffff0fe02c7 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8486d7ac RBP: ffff888008c4e900 R08: 0000000000000001 R09: fffffbfff0fde1e9 R10: ffffffff87ef0f4f R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: ffff888008c4f780 R15: 0000000000000246 __put_partials+0xc4/0x110 qlist_free_all+0x50/0x160 kasan_quarantine_reduce+0x19f/0x240 __kasan_slab_alloc+0x49/0x70 __kmalloc_noprof+0x195/0x4b0 kmalloc_array_noprof+0x42/0x70 ext4_find_extent+0x6fe/0x9b0 ext4_ext_map_blocks+0x1ca/0x5b10 ext4_map_query_blocks+0x82/0x2d0 ext4_map_blocks+0x282/0x1500 ext4_append+0x1b7/0x540 ext4_init_new_dir+0x21f/0x460 ext4_mkdir+0x3d2/0xb30 vfs_mkdir+0x291/0x4f0 do_mkdirat+0x1a4/0x350 __x64_sys_mkdir+0xf3/0x140 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f501988ec27 Code: 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 53 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f5016e04fa8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f501988ec27 RDX: 0000000000000000 RSI: 00000000000001ff RDI: 0000000020000040 RBP: 00007f5016e05040 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000020000040 R14: 00007f5016e05000 R15: 0000000000000000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 skipped: idling at default_idle+0x1e/0x30 audit: type=1400 audit(1733299439.115:27): avc: denied { module_load } for pid=20919 comm="syz-executor.4" path="/sys/kernel/notes" dev="sysfs" ino=185 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:sysfs_t:s0 tclass=system permissive=1 kernel write not supported for file /snd/seq (pid: 19049 comm: kworker/0:0) kernel write not supported for file /snd/seq (pid: 19049 comm: kworker/0:0) kernel write not supported for file /snd/seq (pid: 19049 comm: kworker/0:0) ---------------- Code disassembly (best guess), 1 bytes skipped: 0: 58 pop %rax 1: 72 03 jb 0x6 3: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax a: fc ff df d: 48 8d 6b 58 lea 0x58(%rbx),%rbp 11: 48 89 ea mov %rbp,%rdx 14: 48 c1 ea 03 shr $0x3,%rdx 18: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) 1c: 75 36 jne 0x54 1e: 48 8b 7b 58 mov 0x58(%rbx),%rdi 22: e8 e7 86 0d 00 callq 0xd870e 27: 85 c0 test %eax,%eax * 29: 74 cf je 0xfffffffa <-- trapping instruction 2b: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 32: fc ff df 35: 48 89 ea mov %rbp,%rdx 38: 48 c1 ea 03 shr $0x3,%rdx 3c: 80 .byte 0x80 3d: 3c 02 cmp $0x2,%al